I'm planing next year to cycle for 3 months in Europe, starting in Lisbon and finish at my sisters place in Switzerland.
I brought myself a Vivente World Randonneur touring bike with a front hub dynamo 6v-3w.
My question is, has anybody used a dynamo for charging a GPS with it. If yes, what was the set up you used. Is it possible to buy some gear made up and ready to use. Maybe somebody has some idea what I have to get to make it myself.
Any idea will be great.